Speaker



FIG. 1 is a perspective view of a speaker showing our new design.

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrating portions of the speaker are for environmental purposes only and form no part of the claimed design. 

CLAIM We claim the ornamental design for a speaker, as shown and described. 